Berth-lamp.



M. M. SCHNEIDER.

BERTH LAMP.

APPLICATION FILED NOV 14,1910.

Patented June 6,1911.

2 SHIZETSSHIET l.

M. M. sc'zmmbm BERTH LAMP.

APPLICATION FILED NOV. 14, 1910.

' Patented June 6, 1911.

2 SHEETE-SEi-IET 2.

' MMCM. SGHIiiEEEIEE, CHIGAG-G, ILLIE'E'GIS, icEESIGNQE 'K'Q FEILLEEAN CUHPAEYY,

' GE CHIGAG-G, K'LKIINQIS, GQIRIPGIEMUJTIGEVUF ELLBINOES.

- the PFOVlSiOHi of automatic means plish bgnomvidipg a switchwhich is cutespecification of Lettei's-Potcnt.

Be it known 'tiist 1', Mix M. someone, a eitizeii of the United "States residing at Chicago, in the county of Cooksnd' State of in]. Improvements in Eerth-Lsmps, of which is preferably behimi theisiup in orer to in crease the iiiteiisity of the light. it will be appeifeiit that if'the giess front and its metallic iiemework we 'e to form it snug fit with the concave seiimtoiwhich is used in connection Withjtiieiem ,there-Wooid be no opportunity for the m iction of the heat, see the lamp and its'iociosing metallic parts woiiic'i become bested to en undue extent. 1 therefore pro'vicie :5 swing logs in connect-ion with the metallic mine in the front of the lamp, these logs serving to so position the from; of the inclcsing casing that ample cit-- culatioiu of air end ventilation are secured.

A fufiil'fii? c 015 ect of my invention is to provioie simple means for closing the eiectic circuit in which the lamp is inciucieii without moving the lamp. itself as is common in many berth lenips at present in use. This switching device consists of e peii oi pings similar to mam Y of the cievices well imown in the ei'tg'tiie circuit being'ciosed on depress emi OPP/1130i on do sion of the white ping pres'sien; of the block by whichthe circuit i twi ifch the 1mm is izociuded is opened. when the upperbert is raises into its unused: position.) Thiseresuit I accom- A stih-fm'therobject of my invention is meticsiiy operated is means of the moveuie "upper berth, this switch being connected in serieswith the circuit in which the lamp is inciiirled, the circuit being opened when the berth is raised, end closed when the berth is lowered. I

These and other aciventages of my inveiitioxi Wiii be more apparent by reference to the accompanying-cirewings which represent a preferred emiiociiment my improvements amLin Wiiii i:

Figure .i is a sieiev eievation of the berth izimp siio'wiiig the regulating switch in posi tion, the concave tefiector "being indiceteci in section. is e front elevation of the parts shown in L 3 is s frage csr'sigie showing the berth lamp in posttlon, and the eiect 'icei circuit controiiing the same. 781g. 3: is an eniargei iragmei tary side showing the switch operated. by the zontei section through the switch associated with the berth. lamp I will describe the construction of the Kemp itseiii, we? wiii ioter ciesci'ibe the system of electrics?eoiiiiectio is Wnich serveto operate tine some. I

The ieito g comprises a front pietelfi to -which the inovebie root 11 is memosoi the hinge The front 11 conteiiieci in position in the. front 11 i i any suitefoie manner. 3'? h m the front i' is (3108961 it is held in position by the spring 15, .Atischeci to the rear of the iront i eteietee. one jifiii,

mentsi'y tiaiieveise verticei section through trensvesse vertical section through the car movabie apps? berth mid, Fig. 5 is e ilOIifasteneci' by teins s suiteoie g ess is which may be re--' 11 ere the sgieciiig lugs 11 which serve, as

book 1i "which. is actueteai by tiie' torsion the passe-go of poirceieii 'eocket 1? which [its is attached to the front plate 11 by means of the bracket 18. The bulb 19 is screwed into the socket 17 in the well known manner and the socket 17 is provided with the terminal screws 20 in the usual way. Also attached to the front plate 17 is the switch 21, the plate 522 of which is fastened to the front plate by means of the screws 23, 23. The switch 21 is provided with the plugs 21 and The plug 21- is preferably made white, and the plug 25 black.

The construction of the switch 21 is clearly shown in Fig. 5. The box 26 is held in position against the post 27 by means of the screw 28. The arm 29, piiotally attached to the post 27 at 30, is also pivotally attached near its ends to the metallic pins 31 and 32 rigidly mounted in the plugs 24 and respectively. The arm 29 is pr0- vided, gular projection 33, and adjacent to this the two projections S t and 35. Mounted within the post 27 is the ball 36 which is n'essed against the arm 29 by the spring 37. it willbe apparent that this ball isheld either between the projections :3 and 31-, or 33 and 35. When one of the plugs 24; or is pressed inwardly, the ball 36, after the point. ol the project ion 33 has passed its central line, serves to facilitate the movement of the arm 2! to its desired position and to firmly retain the arm in said position until the projecting plug' is pressed inwardly. llloun'ted against the inner wall 38 ot' the box 26 are a pair of switch members 39, one of which is indicated in Fig. Each of the switch members 39 is held in position by the post ll) and the screw 41, the later also acting as a. terminal screw. Each of the switch n1e1nhers 39 consists of a pair of thin spring blades which are normally held in contact with each other. On the end of the arm 2.) is riveted a pair of U-shaped contact mem bers 42, each of which is adapted to be inserted between the blades of each switch member 39 when the plug 24: is pressed inwardly. In this way, the two switch meml as 39 are brought into electrical. connection.

I will now pass to a description oi my improved system as a whole.

The front plate 10, of the lamp, is fastened to the inner wall 41-3 of the car, and the lamp, as a whole, is thereby located between the inner wall 4 3 and the outer wall It. will be evident that the front; 11 and the switch plugs 24: and occupy a readily accessible position inside of the inner wall l3. 'lthe upper berth 15 is of the well known construction, and may be moved from the position indicated in full lines in Figs. 3 and i to the position indicated in dotted lines when the berth is to be occupied. The electrical current is supplied through a pair of conduc ors 46 and 47. The conductor 46 near its central portion, with an an- I l l l l l l l l a. lamp bulb inside said reflector at passes directly to a switch 18 which has a movable springcontrolled member 49. VJhen the upper berth 45 is moved to its lower position, an electrical connection is automatically formed between the conductors 46 and The conductor 17 is connected with one of the screw terminals 41 of the switch 21. A short conductor 50 leads from the other screw terminal 11 of the switch 21 to one of the tern'iinals 20 of the socket 17. The conductor 17 is continued from the second terminal of the same socket. ..t will thus be apparent that the lamp 19 is connected in series with the conductor 1.7 by the movement of the member 19. It is thus evident that when the upper berth 45 is raised iito its inoperative position, and the movable member -t9 of the switch 4:8 is thereby moved inwardly, the circuit in which the berth lamp is included will be broken and the lamp will be extinguished independently ot whether the switch 21 is in its on 0r oll' position.

it will be apparent to those skilled in the art that: many changes could be made in the detailed construction or" the parts which I have mentioned without departing from the spirit of my invention.

What I claim is:

1. in an electric berth lamp for railway vars, the combination of a supporting front plate adapted for attachment to the car wall, a. reflector fastened to the rear side of said plate, an incandescent lamp socket supported by said plate in position to hold a lamp bulb inside said reflector, a cover permitting pas age or" light therethrough hinged to nil plate. means to hold said cover in closed relatibn to said plate, and means to prevent said cover from closing tightly on said plate whereby to atliord ventilation for said lamp and reflector; substantially as described.

2. In an electric berth lamp for railway cars, the combination of a supporting front plate adapted for attachment to the car wall, a reflector fastcncd to the rear side of said plate, an incandescent lamp socket supported by said plate and positioned to hold an oblique angle to said plate, a. cover permitting passage of light. theretlu-ough hinged to said plate, means to hold said cover in closed relation to said plate, and means to prevent said cover from closing tightly on said. plate whereby to supply ventilation for said lamp and reflector, substantially as described.

3. In an electric berth lamp for railway cars, the combination of a. curved supporting :t'ront plate adapted for attachn'ient to the car wall, a concave reflector fastened to the rear side of said plate, an incandescent lamp socket suporled by said plate and positioned to hold a lamp bulb inside said retlector at an oblique angle to said plate, a

@fiector, substantially 

